摘要
(一)引言在卫星与飞机之间通信,是由以下三种波干涉而成的,即来自传播面的直接波、镜面反射波和快变散射波构成多通道的通信路径。若采用数字信号时。
This article prensents detailed analysis on symbol error probability performance in Satellites——aircraft digital communications,pointing out:in order to transmit with high eificiency in the future we shouldconsider multiphase shift Keying modulation, and also pointing outwhen S/N more than 20^(dB) using MCPSK is better, when S/N lessthan 20^(dB), using MDPSK is better. It finally the standard waveWe should take the problem of band--width in optimum separating
